Te ECHT a 
1916] 
BURT—THELEPHORACEAE OF NORTH AMERICA. VII 341 
ing from substratum to hymenial region; in the hymenial 
region the hyphae become more densely interwoven and 
bear laterally numerous hya- 
line, subglobose probasidia 
12-154 in diameter, and 
terminate in small, curved (Y 
or loosely coiled, colored S 
branches—hardly paraphy- ( Тай 
„2— 
Р ^ . E 
ses—2x in diameter, which < ЗА 
Íorm Ше surface of Ше hy- N \ 
menium; spores simple, hya- | 
line, even, slightly curved, Un, Sr 2 
12-15 x 5-би, borne on Ше j x: 
Fig. 12 
upper three cells of a few- 
. 8. fumigatum. 
celled, nearly straight, hya- h, portion of hymenium showing hy- 
line, spore-bearing organ 40- phae bearing probasidia and terminat- 
Š 2 Б ing in curved and coiled ends; b, three 
50 x 6-7 1и, into which Ше spore-bearing organs; s, spores. X 640. 
probasidium develops. 
Up to 5 m. long, several em. broad, 45-14 mm. thick. 
On trunks of living sapling of Acer rubrum and probably 
other species. South Carolina, Alabama, and Cuba. Novem- 
ber to May; spores most numerous in May. 
S. fumigatum has the general habit and color of Hypoch- 
nus spongiosus and is readily distinguishable among the 
North American species of Septobasidium by its mouse- 
gray color, tomentose surface, and felty structure of loosely 
interwoven hyphae which do not form pillars. It is only 
rarely that I have seen spores or evidences of spore produc- 
tion upon other than the terminal cell in this species. 
Specimens examined: 
South Carolina: Gourdin, C. J. Humphrey, 2588, type (in 
Mo. Bot. Gard. Herb., 48822). 
Alabama: Montgomery, R. P. Burke, 50, and an wnnumbered 
collection (in Mo. Bot. Gard. Herb., 1138°, 20068). 
Cuba: C. Wright, Fungi Cubenses Wrightiani, 838, comm. 
by W. G. Farlow (in Farlow Herb. and Mo. Bot. Gard. 
Herb., 43907). 
